var autocomplete = {

    lastSearch: null,

    fields: [],
    fldIndex: 0,

    setup: function() {

        $('.ac_item').live('click', function (ev) {
            autocomplete.itemSelect($(this).attr('acid'), $(this).attr('value'), $(this).html());
        });

    },

    create: function(masterContainer, searchField, searchAction, renderItemCallback, selectItemCallback) {
        var index = autocomplete.fldIndex++;

        autocomplete.fields[index] = {
            field: searchField,
            lastVal: "",
            containerOpen: false,
            masterContainer: masterContainer,
            container: null,
            feedback: null,
            action: searchAction,
            renderItemCB: renderItemCallback,
            selectItemCB: selectItemCallback,
            value: null
        };

        $(masterContainer).attr('acid', index);
        $(masterContainer).addClass('ac_master_container');

        $(searchField).attr('acid', index);
        $(searchField).addClass('ac_field');

        $(masterContainer).append("<div class=\"ac_container\" style=\"display: none;\" acid=\""+index+"\"></div>");
        autocomplete.fields[index].container = ".ac_container[acid=\""+index+"\"]";

        $(masterContainer).append("<div class=\"ac_feedback\" style=\"display: none;\" acid=\""+index+"\"><img src=\"images/loading.gif\" alt=\"Carregando\" /> Buscando...</div>");
        autocomplete.fields[index].feedback = ".ac_feedback[acid=\""+index+"\"]";

        autocomplete.checkUpdates(index);

    },

    checkUpdates: function(fld) {
        var field = autocomplete.fields[fld];

        var value = $(field.field).val();
        if(value != field.lastVal && field.value == null) {
            field.lastVal = value;
            autocomplete.search(fld, value);
            autocomplete.openContainer(fld);
        }

        setInterval("autocomplete.checkUpdates("+fld+");", 2500);

    },

    search: function(fld, query) {
        var field = autocomplete.fields[fld];

        autocomplete.openContainer(fld);

        autocomplete.setLoading(fld);

        if(autocomplete.lastSearch != null) {
            autocomplete.lastSearch.abort();
        }

        autocomplete.lastSearch = $.post(
            anchor(field.action),
            {'query': query, 'LEAN_MODE': 'yes'},
            function (raw) {
                try {

                    if(raw == null || typeof raw != "string" || raw == "" || raw.length <= 0) { return; }
                    var data = JSON.parse(raw);

                    $(field.container).html("");

                    if(data.length <= 0) {
                        autocomplete.closeContainer(fld);
                    } else {
                        for(var i in data) {
                            var html = field.renderItemCB(field, i, data[i]);
                            $(field.container).append("<div class=\"ac_item\" acid=\""+fld+"\" value=\""+data[i].id+"\">" + html + "</div>");
                        }

                        autocomplete.openContainer(fld);
                    }


                } catch (e) {
                    announce("Ocorreu um erro ao buscar o banco de dados! " + e.message, "error");
                }

                autocomplete.setIdle(fld);
            }
        );
    },

    itemSelect: function(fld, value, label) {
        var field = autocomplete.fields[fld];

        $(field.field).val(value);

        field.value = value;

        field.selectItemCB(field, value, label);

        autocomplete.closeContainer(fld);



    },

    restart: function(fld) {
        var field = autocomplete.fields[fld];
        autocomplete.closeContainer(fld);
        $(field.field).val("");
        field.value = null;
        field.restartCB(fld);
        $(field.field).trigger('focus');
    },

    openContainer: function(fld) {
        var field = autocomplete.fields[fld];

        if(!field.containerOpen) {
            $(field.container).slideDown(500);
            field.containerOpen = true;
        }

    },

    closeContainer: function(fld) {
        var field = autocomplete.fields[fld];

        if(field.containerOpen) {
            $(field.container).slideUp(500);
            field.containerOpen = false;
        }
    },



    setLoading: function(fld) {
        var field = autocomplete.fields[fld];
        $(field.feedback).css('display','block');
    },

    setIdle: function(fld) {
        var field = autocomplete.fields[fld];
        $(field.feedback).css('display','none');
    }


}